Aeronautics and astronautics – Missile stabilization or trajectory control – Automatic guidance
Patent
1978-11-01
1981-03-17
Blum, Theodore M.
Aeronautics and astronautics
Missile stabilization or trajectory control
Automatic guidance
343 5HM, F41G 700, F42B 1502, G06F 1550
Patent
active
042562759
ABSTRACT:
A homing system is provided for guiding a missile (10) towards a metal target. The metal target is illuminated by a radar unit (12) with a transmitted RADAR signal of predetermined frequency. The target reflects the RADAR signal and produces HARMONIC signals having frequencies that are harmonic with the predetermined frequency. An antenna (14) is mounted in the missile for receiving signals, including the HARMONIC signals produced by the target. A wave guide bandpass filter (18) receives signals from the antenna and passes selected HARMONIC signals to a filter output. A detector (34) is responsive to selected HARMONIC signals passed by the filter (18) to produce STRENGTH signals proportional to the signal strength of the selected HARMONIC signals. The STRENGTH signals are received by an error circuit (48) that produces ERROR signals indicating the direction of the target relative to the missile (10).
REFERENCES:
patent: 3631485 (1971-12-01), Beazell, Jr.
patent: 3729150 (1973-04-01), Conger
patent: 3972042 (1976-07-01), Johnson
patent: 4142695 (1979-03-01), Remmell et al.
Flick Edward A.
Holmes Timothy R.
Larson Myles A.
Blum Theodore M.
Crowder, Jr. Albert M.
E-Systems Inc.
Wilder Robert V.
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